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Type: Journal article
Title: The use of OP-1 in femoral impaction grafting in a sheep model
Author: Mc Gee, M.
Findlay, D.
Howie, D.
Carbone, A.
Ward, P.
Stamenkov, R.
Page, T.
Bruce, W.
Wildenauer, C.
Toth, C.
Citation: Journal of Orthopaedic Research, 2004; 22(5):1008-1015
Publisher: Elsevier Sci Ltd
Issue Date: 2004
ISSN: 0736-0266
Statement of
Margaret A. McGee, David M. Findlay, Donald W. Howie, Angelo Carbone, Peter Ward, Roumen Stamenkov, Tara T. Page, Warrick J. Bruce, Corinna I. Wildenauer, Carol Toth
Abstract: The aim of this pilot study was to examine bone graft incorporation in femurs impacted with allograft bone alone (control group) or with allograft containing the bone morphogenetic protein OP-1 (BMP-7) (OP-1 group) in a sheep model of cemented hemiarthroplasty. Two sheep in each group were sacrificed at 6, 18 and 26 weeks. Successful bone graft incorporation was evident in both groups by six weeks but in the OP-1 group, there had been more extensive resorption of the graft. There was one case of excessive stem subsidence in the OP-1 group at six weeks. By 18 weeks, there was remodelling and trabeculation of the new bone in the OP-1 group, but this appeared less advanced in the control group. By 26 weeks, there was remodelling of bone in the graft bed. The results of this small study suggest that OP-1 promotes initial graft resorption, thus hastening bone graft incorporation and remodelling in femoral impaction grafting. The one case of stem subsidence may be associated with the early resorption seen in the OP-1 group and reinforces the need for further studies, examining dose response and using precise measures of stem movement, before this BMP is used in femoral impaction grafting at revision hip arthroplasty.
Keywords: Arthroplasty
Hip: BMP Impaction
Description: Copyright © 2004 Orthopaedic Research Society
DOI: 10.1016/j.orthres.2004.01.005
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Appears in Collections:Aurora harvest
Orthopaedics and Trauma publications

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